{"product_id":"square-d-laf36400v-circuit-breaker","title":"Square D | LAF36400V | Circuit Breaker | 400A | 3-Pole | 36400V","description":"\u003cdiv\u003e\n\u003cp\u003ePower your industrial power distribution with the Square D LAF36400V circuit breaker — a purpose-built, high-capacity protection device designed for demanding 3‑phase systems. With a 400A rating, 3‑pole configuration, and a 36,400V operating capability, this breaker is engineered to safeguard large feeders in tough environments while delivering reliable, consistent protection.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eKey specifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eAmperage: 400A\u003c\/li\u003e \u003cli\u003ePoles: 3‑Pole\u003c\/li\u003e \u003cli\u003eVoltage: 36,400V (36.4 kV)\u003c\/li\u003e \u003cli\u003ePart number: LAF36400V — best reference for compatibility\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eDesigned for maintenance, retrofit, and replacement projects, this LAF36400V unit ensures you’re matching the exact specifications required by your Square D panels. The part number is the most reliable guide for fit and ratings, helping you minimize downtime and compatibility concerns during upgrades or sparking-house repairs.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eWhy this matters for your system\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eHigh-current protection: 400A capacity handles substantial feeders, reducing the risk of overloads in heavy-load environments.\u003c\/li\u003e \u003cli\u003eThree-pole design: Covers all three phases, providing balanced protection and coordinated trip performance for reliable 3‑phase operation.\u003c\/li\u003e \u003cli\u003eHigh-voltage capability: Suitable for industrial distribution scenarios up to 36.4 kV, enabling safe control of large-scale networks.\u003c\/li\u003e \u003cli\u003eClear compatibility reference: The LAF36400V part number is the definitive guide for ensuring the correct fit in compatible Square D installations.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003ePractical use scenarios\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eMaintenance: Replace aging or failed breakers in existing Square D panels that accept LAF series devices, preserving panel integrity and electrical protection standards.\u003c\/li\u003e \u003cli\u003eRetrofit: Upgrade legacy high-capacity feeds to a current, compatible 3‑pole, 400A protection solution without changing the entire panel architecture.\u003c\/li\u003e \u003cli\u003e Replacement: Serve as a direct, drop-in replacement for matched LAF36400V-configured circuits, helping maintain continuity of service with minimal wiring or mounting alterations.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eHow to verify compatibility and ensure a smooth install\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eAlways confirm fit and ratings before ordering—the part number is the most reliable compatibility reference.\u003c\/li\u003e \u003cli\u003eCheck that your panel or switchgear accepts LAF-series breakers and matches the 3‑pole, 400A, 36.4 kV specification.\u003c\/li\u003e \u003cli\u003ePrepare for installation by verifying mounting, bus bar alignment, and any panel-specific torque or terminal requirements recommended for LAF36400V devices.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eIn short, the Square D LAF36400V circuit breaker is a decisive choice for professionals maintaining or upgrading high‑voltage, three‑phase distribution. Its precise 400A, 3‑pole, 36.4 kV ratings, combined with a clear compatibility reference, make it the reliable option when exact specifications and dependable protection matter most.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Square D","offers":[{"title":"Default Title","offer_id":46426356121762,"sku":"LAF36400V","price":2010.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/square-d-laf36400v-circuit-breaker-400a-3-pole-36400v-435.webp?v=1789562432","url":"https:\/\/www.ampstate.com\/products\/square-d-laf36400v-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}